He works in the field of Hamiltonian dynamical systems, particularly many-body systems with long-range interactions. He studies long-lasting non-equilibrium states of such systems by using statistical mechanics and kinetic theory. He found that first-order phase transition occurs in a system which has second-order phase transition only in thermal equilibrium. He actively collaborates with foreign researchers.

Systems having long-range interactions are frequently trapped in long-lasting quasi-stationary states. I study the quasi-stationary states by non-equilibrium statistical mechanics, kinetic theory and so on.

研究分野（キーワード）

キーワード(日本語)

キーワード(英語)

準定常状態

Quasi-stationary state

非平衡統計力学

Non-equilibrium statistical mechanics

運動論

Kinetic theory

論文 > 論文

(文系研究者の一般的な論文集への寄稿や単行本の分担執筆などは「著書等」を参照してください)

著者名

タイトル

書誌情報等

年月

査読の有無

言語

Y. Terada, K. Ito, T. Aoyagi and Y. Y. Yamaguchi

Nonstandard transitions in the Kuramoto model: A role of asymmetry in natural frequency distributions

Journal of Statistical Mechanics: Theory and Experiment,2017,013403

2017/01

有

英語

Y. Y. Yamaguchi

Strange scaling and relaxation of finite-size fluctuation in thermal equilibrium

Physical Review E,94,1,012133

2016/07

有

英語

Y. Y. Yamaguchi and S. Ogawa

Conditions for predicting quasistationary states by rearrangement formula